Work

Magnetic flux induced higher-order topological superconductivity

Year: 2025

Type: article

Abstract: Higher-order topological superconductivity typically depends on spin-orbit interaction, and often necessitates well-designed sample structures, nodal superconducting pairings, or complex magnetic order. In this work, we propose a model that incorporates a Zeeman field, antiferromagnetic order, and $s$-wave superconducting pairing, all without the need for spin-orbit interaction. In a two-dimensional system, we realize a second-order topological superconductor by utilizing a staggered flux, provided that the Zeeman field is oriented perpendicular to the magnetic order moments. In three-dimensional systems, we achieve second- and third-order topological superconductors in theory, through stacking the two-dimensional second-order topological superconductor.

Source: Physical review. B./Physical review. B

DOI: 10.1103/p91n-lvqv

Authors: Jinpeng Xiao, Qianglin Hu, Zuodong Yu, Weipeng Chen, Xiaobing Luo

Institutions: Jinggangshan University, Tongren University, Zhejiang Gongshang University, Jinan University, Zhejiang Sci-Tech University

Language: English

Topic: Topological Materials and Phenomena

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green